Title :
A compact quarter-wavelength stepped-impedance resonator bandpass filter with source-load coupling
Author :
Jun Xu ; Wei Hong ; Zhe Chen
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing, China
fDate :
March 30 2015-April 1 2015
Abstract :
In this paper, a compact quarter-wavelength stepped-impedance resonator bandpass filter is proposed, two extra transmission zeros are implemented by source-load coupling between the feedlines, a filter with two resonators is designed, each resonator consists of a low-Z section and a high-Z section, good performance is achieved both in passband and stopband. Demonstrator filter is designed on the Rogers RT/Duroid 5880 dielectric substrate, centered at 5.8GHz, and the BW is 400MHz. The measureted result shows that RL in passband is less than 15dB, and the minimal IL is 3.0dB. This filter occupies an area of 6.55mm×2.85mm. The demonstrator filter is fabricated, and good agreement between measurement and simulation is achieved.
Keywords :
band-pass filters; resonator filters; Rogers RT Duroid 5880 dielectric substrate; bandwidth 400 MHz; compact quarter-wavelength stepped-impedance resonator bandpass filter; demonstrator filter; feedlines; frequency 5.8 GHz; high-Z section; low-Z section; source-load coupling; transmission zeros; Band-pass filters; Couplings; Filtering theory; Magnetic separation; Microstrip filters; Microwave filters; Resonator filters; Bandpass Filter; Source-load coupling; compact; stepped-impedance resonator; transmission zeros;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164537
